{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["RNA", "DNA", "cell type", "protein", "cell line"], "input": "We have used a 32P-labeled oligonucleotide derived from human immunodeficiency virus ( HIV-1 ) long terminal repeat , which contains a tandem repeat of the NF kappa B binding sequence , as a probe in a gel retardation assay to study this transcription factor ."}
{"RNA": [], "DNA": ["human immunodeficiency virus ( HIV-1 ) long terminal repeat", "tandem repeat", "NF kappa B binding sequence"], "cell type": [], "protein": ["NF kappa B", "transcription factor"], "cell line": []}